Electromagnetic valve.



No. 802,945. w PATENTED OGT. 24,' 1905. I; G. WATERMAN.

ELEGTROMAGNETIG VALVE.

APPLICATION FILD JUN 25, 1908.

"UNITED sTATEs PATENT OFFICE.

Specification of Letters Patent.

Patented Oct. 24, 1905.

Application filed June 25, 1903. Serial No. 168,126.

To all wi'tom it may concern:

Be it known that I. IsAAc G. WATERMAN, a citizen of the United States,residing at Santa Barbara, in the county of Santa Barbara and State ofCalifornia, have invented ne w and useful Im provements inEleetromagnetic Valves, of which the following is a specification.

This invention relates `to electromagnetic valves.

In niy copending applications, Serial Nos. 146,975 and 146,976, I haveshown electromagnetically-opened self-closing valves operating on atemporary current, together with electomagneticallyretracted lookingmeans for holding the valves open until another tempoiiary current issent through the unloekingcoi In the present invention my object is toprovide an improved electromagnet-ic valve in which the valve-Operatingarmature will not be exposed to the rusling action of the water and onewhich will be of neat appearance and compact arrangement, of few parts,durable, positive, and reliable in its opening, looking, and closingactions, and not liable to get ont of order. In the present invention Ipropose to make the valve self'- closing, accomplish opening thereof andautomaticlocking by temporary magnetic action, and induce closing of thevalve by the release thereof by temporary magnetic action.

The invention resides more particularly in a novel arrangement ofeleetromagnets and their action on the same armature, as well as thepeculiar construction of the armature and its manner of coperation withthe self-closing valve, as clearly set forth hereinafter.

The novel features are recited in the ap-` pended claims.

ln the accompanying drawings, Figure 1 is a sectional side elevation.Fig. 2 is a crosssection on line X X of Fig. 1; Fig. 3, a detail sectionon line 3,' y of Fig. 1.

The Valve-casing 1 is of an ordinary type and has the valve-seat 2. Theusual pipes screw into the ends of the valve-casing. the ends of thevalve-casings are the integral nuts for convenience in screwing thepipes and casing together, and in its bottom the valve-casing has aremovable screw-plug closing an opening through which the valve 5 can beconx-'eniently inserted into or removed from the valve casing. The valveseats against the bottom of the seat 2 and is provided with the usualwings or vanes 6, one of which is received in a notch 7 in thevalve-seat, whereby the valve is prevented from turning. The valve-stem8, which is rigid with the valve, Works through the glands 9 and isprovided at its' upper end wi th an antifriction-roller 10. Thevalve-Stern has a collar 11, between which andthe top of seat 2 is acoil-spring 12, whose tendency is to seat the valve. The upper endportions of the valve-casing are provided with integral curvedtransversely-disposed magnet-seats 13. i

There are two electromagnets 14 and 15 o lthe solenoid type, which havecylindrical outer'iron shells 16 seated in the respective seats 13 andsecured by the` screws 17 Fig. 1. The magnets are thus held securelyagainst lateral and longitudinal displacement with their hollow centersin alinernent. The solenoids are wound on brass shells 18 and aresuitably insulated at 19. Removable heads 20 are also provided. On theshells 16 are central stubsor projections 21.

The armature 22 slides in the shells 18 and has sound-deadening bufers23 at its ends, which are adapted to strike against the projections 21at the two limits of the movement of the arinature. On the armature is apin or lug Qf, which plays in a guideway 25 in the left-hand shell 18and prevents turning of the armature. The lower part of the armature hasa large notch 26 and a small locking-notch 27 at the side of said notch.One or the other of these notches is adapted to receive the roller 10,according to the position of the armature. i

Assuming that the parts are in the position shown in Fig. 1, the valveis then held against its seat by the spring. Un sending a currentthrough the coil 14 the armature is drawn thereinto, thus depressing thevalve-Stern and valve. The bufferystrikes the projection 21 on the shellof niagnet-coil 1111, and the roller 10 passes xneanwhile from the deepnotch 26 into the shallow looking-hoteli 27, where it reniains, keepingthe valve open until a current is sent through the coil 15, whereuponthe armature is drawn hack into theposition shown in .h`ig. 1, allowingthe roller 10 to enter notch 26 and the spring to seat the valve again.lltwill be understood that a temporary current only need be sent througheither coil, and to do this a suitable switch, such as those set forthin certain of my copending applications, can be employed, although otherswitches pnrpose.

thus described 'my inventon, what might be used for this :I

I oiaim as new, and desire to secure by Letters Patent9 is-- O 1. In anelectromagnetie valve; the com'- bination with a valve, ot' meansforseatingaid valve when said valve is freed, an armature ooperating withthe valve and causing'opening and o losing of the Valve on successivemovements, and independent electromagnete'con'-` trolling said'armatureand arrang'ed to inde- .pendently aetuate ,it to dilfer'ent .position'sto independently cause opening and elosingvo thelvalve.

2. In an eieotromagnetio Valve,` the oem-L1V bination with a Valve, ofmeans adaptedtseatsaid valve When freed, an' armature movable todifierent positions, independent electromagnets independentlycontrolling! said' armature to'independently move'it to' difier'- entpositions, and an operative connection.:

between the armature and'valve, oompriaing a cam on one of them and amember-oooper-f atingwrrithl the eam'; on the other of' them;-

31' In aneleetromagnetio Valve, theeom'- binati'on with aspring-actuated yalve; ofan armature'having a cam and a-depression'co-'Operating With the valve, the depreseioirperrmitting the'valire to closeand the oam'being adapted to open the Valve against its spring= olosing'tendenoy, and indep'endent-eleetro-P magnets independently controllingsaid' armature' toindependently move it to different having-.a camcoaoting With the valve to o erate-thevalveagainst the tendenoy of t e s"ring, and 'independent eleotroniagnets inependentlyoontrolling thearmature to in- Ydpendentl" move it to different positions to having acam ooperating With the roller to w uneeat 'the valve.

6;' The combination with' independent alined sole'noids; of an armaturemovable in saidj- -solen'oids and =having a eam-noteh and aloeking-notoh, a'valve, a va1ve-stem,- a spring: adapted to l`projectthe Valve-Stern into the notches', whereby attraction of the armature byone solenoid moves the valvestem against the tension of the spring andcauses 'it to sna into the looking-notoh thereby'holding the Valve open,and operation-of the other solenoid permits the Valvestem :tol` returninto' the eam-notch and the Valveto close-by the action of the spring.

In`--testimony Whereof I have signed my name'to this' specification in=the presenee of twosubsoribin'g Witnesses.

ISAAC G. WATERMAN.

' Witnessesz.

ifihiniwia: R; Serwer, ELMER SEAVEY.

